JP4689470B2 - Interlabial pad - Google Patents

Description

  The present invention relates to an interlabial pad in which the wearer hardly feels a feeling of use even when pressure is applied to the interlabial pad from the outside in accordance with the operation of the wearer.

  Conventionally, sanitary napkins and tampons are generally used as feminine sanitary products, but recently, sanitary products that are located between these sanitary napkins and tampons have attracted attention. Being started. This interlabial pad is inserted between the labia of a woman and abuts against the inner wall of the labia and is attached to the inner wall of the labia, and since it has higher adhesion to the body than a sanitary napkin, it can prevent leakage of menstrual blood Since it can prevent the spread of menstrual blood, it is hygienic and clean. Moreover, since it is smaller than a sanitary napkin, it is excellent in wearing feeling and has a feature that psychological resistance at the time of wearing is lower than that of a tampon inserted into the vagina.

As the interlabial pad having such characteristics, those having various structures have been developed. For example, the interlabial pad described in Patent Document 1 is folded in half so that the back side faces each other along a crease line along the longitudinal central axis of the interlabial pad, and the back sides are at least one joint or more. It is what is joined. This interlabial pad has a structure in which a wearer can insert his / her finger into a space formed by joining the back sides and can be worn in the space between the labia. The interlabial pad of the type used by being folded in this way is attached so that the bent portion formed by folding in half is in contact with the vestibule floor, and is easily sandwiched between the labia, It has the advantage that it fits inside the labia and there is less concern about menstrual leakage, and it can be said that this is a preferable structure.
International Publication No. WO02 / 100315 Pamphlet

  However, when the interlabial pad described in Patent Document 1 is worn, the bent portion and the joint portion are positioned substantially on a vertical line. For this reason, when pressure is applied from the outside to the interlabial pad that is sandwiched between the labia with the movement of the wearer such as sitting on a chair, the pressure is directly transmitted to the bent portion, and the bent portion In order to press the vestibular floor which is in contact with the wearer, there is a problem that the wearer feels a strong feeling of use.

  Therefore, even if pressure is applied to the interlabial pad from the outside in accordance with the movement of the wearer, it is imposed on those skilled in the art to develop a bi-fold type interlabial pad that the wearer does not feel use. It was a problem. The present invention has been made in view of the problems as described above, and the purpose of the present invention is to wear the wearer even when pressure is applied to the interlabial pad from the outside with the wearer's movement. Is to provide an interlabial pad that feels almost unusable.

  The inventors of the present invention have a bifold type interlabial pad, and the wearer does not feel a strong feeling of use even when pressure is applied to the interlabial pad from the outside with the movement of the wearer. We have earnestly studied how to provide an interlabial pad. As a result, the interlabial pad is hardly felt by the wearer by providing the interlabial pad with a pressure dispersing means for dispersing the pressure applied to the interlabial pad from the vestibular floor with the movement of the wearer. The present invention has been found to be able to be provided. Specifically, the present invention provides the following.

  (1) The interlabial pad having a substantially vertically long shape having a body side facing the body side in a worn state and an anti-body side facing the opposite side of the body side and having a longitudinal direction and a lateral direction And when worn, it is folded in two so that the opposite body side faces each other in the short direction, and at least a part of the portion along the fold line that is the folding axis of the bifold is in the labia It is sandwiched between the labia so as to contact the vestibule floor, and the region straddling the crease line is repelled by the pressure generated on the interlabial pad in accordance with the operation of the wearer, and the pressure The interlabial pad is provided with a pressure dispersion means for preventing water from being directly conducted to the vestibular floor.

  The interlabial pad according to (1) is a bi-fold type interlabial pad, and when the vestibular floor strongly presses the region straddling the crease line of the interlabial pad in accordance with the wearer's movement, the pressure is reduced. Pressure dispersing means for dispersing is provided in a region straddling the crease line. Here, the “vestibule floor” means the base part of the left and right labia, that is, the area along the line connecting the clitoris located inside the labia to the vaginal opening and is very sensitive to external stimuli. It is an important part. In addition, the “region straddling the crease line” means a region that includes the crease line that is a folding axis of the fold and is along the crease line, and at least a part of the crease line is worn while wearing the interlabial pad. It is in contact with the floor. As used herein, the term “pressure dispersing means” means that when a wearer sits down on a chair and strongly presses a region where the vestibular floor straddles the crease line, the pressure is applied in an outward direction that intersects the direction of the pressure. The region straddling the crease line swells and deforms so as to be dispersed (see FIGS. 1, 2 and 3).

  In a conventional bi-fold type interlabial pad, if a strong pressure is applied to the area straddling the crease line from the vestibular floor, the crease line is formed by folding in half before the area straddling the crease line is deformed. The bent pieces formed on both sides are deformed by buckling. This is because the bending force of the region straddling the crease line is increased by folding in half. Therefore, in the conventional bi-fold type interlabial pad, since the region straddling the crease line is not deformed, the wearer feels a foreign object, while the bent piece is deformed, so that the adhesion to the inner wall of the labia is obtained. The problem that the risk of menstrual leakage leaked increased.

  In this regard, in the interlabial pad according to (1), since the pressure dispersion means is provided across the crease line, the pressure applied to the region across the crease line from the vestibule floor can be dispersed outwardly. The floor does not receive a strong repulsive force from the interlabial pad. More specifically, when the vestibular floor strongly presses the area that crosses the crease line in accordance with the wearer's movement, the area that crosses the crease line so as to disperse the pressure in the outer direction that intersects the direction of the pressure. Therefore, the interlabial pad hardly presses the vestibule floor against the pressure, and the wearer hardly feels the feeling of use. Therefore, according to the interlabial pad according to (1), even when pressure is applied from the vestibular floor to the interlabial pad in accordance with the movement of the wearer, the wearer hardly feels the feeling of use and is comfortable. Can lead daily life.

  In the interlabial pad according to (1), the pressure dispersion means is provided across the crease line, but the case where there is a space between the pressure dispersion means and the crease line is also included (for example, see FIG. 15). ), And is not particularly limited as long as it is disposed across the crease line. Therefore, it may be disposed on the entire interlabial pad, but it is preferably provided in a region that contacts the clitoris or the vaginal opening that is particularly sensitive to stimulation. The crease line is preferably provided along the central axis in the longitudinal direction, but all crease lines formed by folding in two are included in the crease line in the present invention. In addition, the two-fold type interlabial pad referred to in the present invention includes both one folded from the beginning and one folded when worn.

  As described above, the region straddling the crease line includes a crease line that is a folding axis of the fold, and means the region along the crease line, but the length in the short direction is preferably In the range of 0.5 mm to 40 mm, and more preferably in the range of 5 mm to 20 mm. The crease line may be a straight line extending in the longitudinal direction, but a shape having an apparent width such as a zigzag shape or a wave shape is preferable because the region straddling the crease line is further expanded and easily deformed.

  Further, in order to effectively prevent the outflow of menstrual blood and the fall of the interlabial pad in addition to the effects as described above, the external dimension of the interlabial pad according to (1) is as follows: In consideration of the size of the space formed between the shorts and the shorts, the total length in the longitudinal direction is preferably in the range of 50 mm to 180 mm, more preferably in the range of 80 mm to 120 mm. In addition, the total width of each folded piece is preferably in the range of 15 mm to 50 mm, and more preferably in the range of 25 mm to 40 mm.

The interlabial pad according to (1) is a liquid-permeable front side sheet disposed on the side of the body, an absorbent that absorbs and retains body fluid, and a liquid-impermeable surface disposed on the side opposite to the body. It may be provided with a back side sheet. In this case, a sheet that is liquid permeable and hardly irritate the skin is generally used as the surface side sheet. As an example of the fiber used, the fiber length is preferably in the range of 5 mm to 51 mm, more preferably in the range of 25 mm to 51 mm, and the Young's modulus is in the range of 100 kg / mm ^{2 to} 1500 kg / mm ² . by weight, more preferably, a fiber selected from the range of 300 kg / mm ² or more 1000 kg / mm ^2. For example, those containing rayon, acetate rayon, natural cotton, pulp, chemical pulp, or synthetic resin as a component alone or in combination so as to form a core-sheath structure can be used alone or in combination. These fibers may have a different cross-sectional shape such as Y-type or C-type, or may be fibers whose molecular orientation has been increased by being stretched or crimped. .

Such fibers are laminated in a region straddling the crease line, and then formed into a sheet by a method such as spun pond, point bond, air through, needle punch, dry / wet spun lace, and the surface side sheet is formed. Specifically, the preparation of 30% more than 5% natural cotton or less, the fibers mixed with rayon or acetate rayon in a ratio of 95% or less 70%, weight per unit area within the range of 20 g / ^{m 2} or more 50 g / ^{m 2} or less Thereafter, the fibers are entangled with each other by hydroentanglement and dried, and a spunlace nonwoven fabric having a thickness of 0.3 mm to 1.0 mm is used. The yarn used is a natural cotton with a fiber length of 15 mm to 60 mm, and a rayon or acetate rayon with a fiber length of 25 mm to 51 mm, and a fineness of 1.1 dtex to 6.6 dtex. It is within the range.

  In addition, when the interlabial pad is folded in two, if the thickness of the absorbent material in the region straddling the crease line becomes thinner than the thickness of the absorbent material in the folded piece, pressure is applied to the region straddling the crease line from the vestibule floor. The region across the crease line is difficult to deform. In order to prevent this, it is effective to use a surface-side sheet that can be easily extended in the short direction, thereby reducing the thickness of the absorbent material in the region straddling the crease line. Can be prevented.

  In order to form a surface side sheet that can be easily stretched in the short direction, a method of increasing ductility between fibers forming the surface side sheet can be mentioned. Examples of fibers necessary for forming the surface side sheet include fibers having a high crimp rate, fibers that are easily stretched by mixing rubber components, split fibers, fibers having a low molecular orientation, and the like. Can be mentioned. In order to increase the ductility between fibers, use a fiber mixed with an oil agent, a fiber whose cross section is reduced to a contact area with adjacent fibers by mixing Y-type fibers or C-type fibers, etc. To do. Another example of a method for imparting extensibility in the short direction of the surface side sheet is a method of performing waved embossing of biting in the short direction, and the extensibility is controlled by the wave size and pitch. it can. The extensibility here refers to how much the length of the original front side sheet in the short direction is extended by forming a wave (for example, the length of the original front side sheet in the short direction is 100 mm, When the length becomes 200 mm by forming a wave shape, the extensibility is doubled). Specifically, the extensibility becomes 1.5 times by using a biting pattern having a height of 1.12 mm and a pitch of 2.0 mm. Further, as another example, the total length of the front side sheet in the short direction is larger than the total length of the back side sheet in the short direction, and the deflection of the front side sheet is provided in a region straddling the crease line. Yes. Therefore, when folded in half, the surface sheet can be easily extended in the lateral direction by this deflection, and therefore the thickness of the absorbent material in the region straddling the crease line can be prevented from being reduced.

  The surface side sheet is not limited to the fiber assembly in which the fibers are collected as described above, and may be a perforated film. In the case of an apertured film, the aperture diameter in the region straddling the crease line is in the range of 0.2 mm to 5 mm, the pitch is in the range of 0.2 mm to 10 mm, and the aperture area ratio is 10% to 50%. %, The hole diameter other than the region straddling the crease line is in the range of 0.05 mm to 3 mm, the pitch is in the range of 0.2 mm to 10 mm, and the hole area ratio is 3% or more. It is preferably within the range of 30% or less. As a manufacturing method, a film is passed through a pattern drum whose opening conditions have been changed in advance, and a surface side sheet obtained by a so-called PFW method in which holes are opened by suction suction or a PFW method having uniform opening conditions. For example, there may be mentioned a method of further adding an opening to the region straddling the crease line by pin embossing. The arrangement of the apertures is not particularly limited, such as a staggered pattern, a lattice pattern, or a wavy pattern. Examples of the shape of the opening include a round shape, an elliptical shape, and a square shape. Moreover, the valve may be provided in the periphery of the opening part. Preferably, the height of the valve in the opening portion in the region straddling the crease line is lower than the height of the valve in the region other than the region straddling the crease line, in order to prevent the opening from being blocked by the valve even when external pressure is applied. It is a thing.

As the absorbent, a fiber aggregate can be used. For example, the fiber length is in the range of 5 mm to 51 mm, more preferably in the range of 25 mm to 51 mm, and the Young's modulus is 100 kg / It is a fiber selected from the range of mm ^{2 to} 1500 kg / mm ² , preferably from 300 kg / mm ^{2 to} 1000 kg / mm ² . Examples include rayon, acetate rayon, natural cotton, pulp, chemical pulp, polymer absorbers, fibrous polymer absorbers, synthetic fibers, etc. alone or a mixture of these, which are bulky and out of shape It is difficult and it is preferable that there is little chemical irritation. These fibers may be a mixture of cross-sectional shapes such as Y-type and C-type, and those whose molecular orientation has been increased by being stretched or crimped. It may be a fiber.

As a specific example, a fiber obtained by laminating rayon or acetate rayon selected from the range of 1.1 dtex or more and 6.6 dtex or less in a mixing ratio of 60% or more and 95% or less and natural cotton in a mixing ratio of 5% or more and 40% or less, A nonwoven fabric sheet having a basis weight of 50 g / m ² or more and 500 g / m ² or less and having a bulk of 1 mm or more and 20 mm or less is exemplified. In addition, the above-mentioned fibers are laminated in a region straddling the crease line, and then formed into a sheet by the airlaid method, the melt-prone method, the spunlace method, the papermaking method, etc., between rolls such as needling, dot-like, and lattice-like May be passed through and embossed. The embossed area ratio is preferably in the range of 0.3% to 60%. To give more specific examples, 100 g / m ² of pulp having a fiber length of 8 mm or less is laminated on a part of the absorbent in the region not straddling the crease line, and the absorbent in the region straddling the crease line has a fiber length. Is a mixture of 85% of 3.3 dtex rayon with 51 mm and 15% of natural cotton, fiber-oriented so as to cross the crease line, and 180 g / m ² laminated on the entire surface of the absorbent material. When the fiber length is short, there are few entanglement points between the fibers, and the density becomes high and the rigidity tends to increase.Therefore, when pulp with a short fiber length is used in an area that does not cross the crease line, the rigidity of the area is the crease. It becomes higher than the rigidity of the region straddling the line. Therefore, when the vestibular floor is in contact with the region that crosses the crease line with a strong pressure, the region that does not cross the crease line is less likely to be deformed, so that the region that crosses the crease line is more easily expanded and more easily deformed. There is no strong repulsive force applied to the vestibule floor.

  (2) The interlabial pad is provided with a fiber assembly in a region straddling the crease line, and the pressure dispersing means is oriented to intersect the crease line in order to control the resilience to the pressure. The interlabial pad according to (1), which has an open fiber.

  In the region straddling the crease line of the interlabial pad according to (2), fibers that are oriented to intersect the crease line are provided as pressure dispersion means. For this reason, even if the interlabial pad according to (2) is folded in two when worn, each fiber provided in the region straddling the crease line has a resilience rigidity to return to the original shape. Therefore, when the wearer sits on a chair and presses the area where the vestibule floor straddles the crease line with a strong pressure, the area straddling the crease line with repulsive rigidity easily swells and deforms, The pressure can be distributed in the outer direction intersecting the direction. For this reason, the interlabial pad hardly repels pressure and presses the vestibule floor, and the wearer feels almost no feeling of use and can live a comfortable daily life.

  In the interlabial pad according to (2), at least a part of the fibers constituting each member arranged in the region straddling the crease line among the fibers of the fiber assembly constituting the interlabial pad intersects the crease line. So as to be oriented. Here, the “fiber assembly having fibers oriented so as to cross the crease line” means that the fiber orientation has an angle with respect to the crease line, and at least the fiber orientation is not parallel to the crease line. It means a fiber assembly. Further, it is only necessary that at least a part of the fibers of the fiber assembly constituting each member arranged in the region straddling the crease line is oriented so as to intersect the crease line.

  Examples of the fiber assembly constituting the interlabial pad according to (2) include, for example, a liquid-permeable surface-side sheet composed of a fiber assembly and a body composed mainly of a fiber assembly and absorbing body fluid. Examples thereof include an absorbent material having a holding function. And only the fibers of the surface side sheet composed of the fiber assembly may be oriented so as to cross the crease line, or only the fibers of the absorbent material composed of the fiber assembly may be oriented so as to intersect the crease line. You may do it. Alternatively, any of the fibers of these fiber assemblies may be oriented so as to cross the crease line. Furthermore, when each of the surface side sheet and the absorbent material has a multilayer structure, it is sufficient that the fibers of at least one layer of the fiber aggregate are oriented so as to cross the crease line. .

  The index that the fibers are oriented crossing the crease line is expressed by the ratio of the maximum tensile strength to MD and the maximum tensile strength to CD (tensile maximum strength MD / CD) of each of the surface side sheet and the absorbent material. can do. Here, MD means the longitudinal direction of the fiber assembly, and CD means the short direction of the fiber assembly. Specifically, the maximum tensile strength MD / CD is preferably in the range of 0.1 to 7.0, and more preferably in the range of 0.5 to 2.5. Here, the state where the tensile maximum strength MD / CD is 1 means that the fiber orientation in the MD and the CD orientation are substantially the same. In addition, in order for the fiber to be oriented across the crease line, it is preferable that the fiber length is longer, specifically within a range of 5 mm to 51 mm, more preferably within a range of 25 mm to 51 mm. is there.

In general, the index indicating the rebound rigidity of the fiber can be represented by Young's modulus (= load / strain amount). Specifically, preferably in the range of 100 kg / mm ² or more 1500 kg / mm ² or less, more preferably in the range 300 kg / mm ² or more 1000 kg / mm ² following. The rebound rigidity is adjusted by changing the fineness, and specifically, the fineness is appropriately selected from the range of 1.1 dtex to 6.6 dtex.

The absorbent material composed of the above-mentioned fiber assembly has elasticity in addition to the inherent function of the absorbent material that absorbs and retains body fluids, and when pressure is applied, it repels this pressure. Thus, the pressure can be dispersed. Examples of such an absorbent material include a mixture of an elastic material and an absorbent material, and examples of the elastic material include foamed materials having elastic fibers and air cells. Examples of the elastic fiber include fibers made of a thermoplastic material such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), and the like, and each resin having a single or core-sheath structure or side-by-side structure. Preferably, the fiber is subjected to secondary crimping by a machine or heat. In consideration of wearing feeling, the fiber thickness is preferably in the range of 0.5 to 8.8 dtex, and the fiber length is preferably adjusted in the range of 3 mm to 64 mm. In addition, as the foaming material, a material obtained by foaming a resin such as PE or PP having elasticity, or urethane or rubber having high elasticity is used. Furthermore, cellulose sponge etc. which have water absorption are used suitably. These materials are cut into filaments or granules, and then mixed with an absorbent material to form an absorbent material. On the other hand, examples of the absorbent material include general materials such as flap pulp, rayon, and cotton, and particulate and fibrous materials of a polymer-absorbing polymer such as SAP (super absorbent resin). In addition, it is preferable that the composition ratio of an elastic material and an absorption material exists in the range of elastic material: absorption material = 1: 4-4: 1 by weight ratio. The weight of the absorbent material is preferably in the range of 20 g / m ² or more and 500 g / m ² or less, and 50 g / m ² or more and 400 g / m ² or less from the viewpoint of the thickness of the interlabial pad and the feeling of wearing. It is more preferable to be within the range.

  Moreover, the above-described absorbent material may have rigidity in addition to elasticity. Here, “rigidity” means that when an external force is applied to the object to deform it, the object resists the deformation. That is, as long as elasticity can be imparted to the region straddling the crease line, a rigid material other than the elastic material may be used in the absorbent material in the region straddling the crease line. Moreover, a rigid material can also be used in the absorbent material in both folded pieces. In this case, when pressure is applied to the area across the crease line from the vestibule floor, both folded pieces having a rigid material are less likely to be deformed, and therefore, the area across the crease line is more easily swollen and more easily deformed. preferable.

  The rigidity can be obtained by increasing the weight of the absorbent material and / or increasing the thickness. Specifically, the basis weight of the absorbent material having rigidity is preferably higher by at least 20% than that of the absorbent material not having rigidity. In addition, as a method of increasing the basis weight, in addition to the method of increasing the absorbent material, the method of increasing the stacking amount by increasing the depth of the pattern plate in the stacking process of the absorbent material, or increasing the suction amount, For example, a method of partially overlapping the second absorbent material may be used. The rigidity can also be obtained by increasing the density of the absorbent material. Specifically, as a method of increasing the density of the absorbent material, there is a method of embossing the absorbent material in a region straddling the crease line of the folded interlabial pad. However, if the proportion of the absorbent material whose thickness is reduced by embossing becomes too high, the interlabial pad will drop off or the rigidity will become too high, which is not preferable. Embossing is made by creating a roll with an embossed pattern on a base made of metal, rubber, etc., and a roll with a flat or meshing pattern, and passing the absorbent between the two rolls. It is possible to form an absorbent material that is embossed on a part of the absorbent material. At this time, the rigidity can be adjusted by applying an appropriate temperature and pressure. The embossing pattern is a flat crushing type, a crushing type with a square or rounded intermittent pattern, or an intermittent embossing that is alternately embossed by high pressure and medium pressure. Examples include the formed type. Furthermore, rigidity can also be provided to an absorbent material by adding an adhesive to the absorbent material. As the adhesive, generally used rubber-based or olefin-based HM (hot melt) is used without particular limitation, and these HM are melted and applied to the surface or inside of the absorbent material. Examples of the coating method include spray, spiral, beat, CC, curtain coater, Durer weave and the like that can be applied in a non-contact manner, and examples of the contact coating method include a coater and a roll coater. In addition to HM, water-soluble glue or the like can also be used.

  Moreover, it is a member different from an absorber, a surface side sheet | seat, and a back surface side sheet | seat, Comprising: You may provide the sheet | seat member which has elasticity in the area | region over a crease line. The arrangement of the sheet member is not particularly limited as long as it is a region straddling the crease line. For example, a liquid-permeable front side sheet on the body side surface, a liquid-impermeable back side sheet on the opposite side surface, and these In the case of the interlabial pad having the absorbent material arranged between the case and the case between the back side sheet and the absorbent material, or between the front side sheet and the absorbent material In addition, the case where it arrange | positions in the form sandwiched in the absorber is mentioned. In addition, the nonwoven fabric using the elastic material mentioned above is used suitably for this sheet | seat member. As a method for producing a nonwoven fabric, there is a method in which fibers are laminated with a card, bonded by melting thermoplastic fibers, and then formed by a through-air method. The nonwoven fabric obtained by this method has a resilience elastic force. Therefore, it is preferable. In addition, commonly used point bonds, spun bonds, water jets (WJ), spun bonds in which continuous filaments are spun and bonded by hot embossing, and SMS sheets (spun bond / A meltblown / spunbond three-layer structure sheet) can also be used. Furthermore, the chemical bond and the airlaid method which bond by apply | coating a binder to the surface after fiber lamination can also be used.

  (3) The interlabial pad according to (1) or (2), wherein the pressure dispersing means has a slit formed in a region straddling the crease line.

  The region straddling the crease line of the interlabial pad according to (3) is subjected to slit processing as pressure dispersion means. Thus, by subjecting the region straddling the crease line to slit processing, rebound rigidity can be imparted to the region straddling the crease line. Therefore, according to the interlabial pad in (3), when the wearer sits on a chair and the vestibular floor presses the area that crosses the crease line with strong pressure, the area that crosses the crease line having rebound rigidity Can easily swell and deform to disperse the pressure in the outer direction that intersects the direction of the pressure. For this reason, the interlabial pad hardly repels pressure and presses the vestibule floor, and the wearer feels almost no feeling of use and can live a comfortable daily life.

  For slit processing, the slit dimensions are preferably in the range of 1 mm or more and 20 mm or less, and the pitch is preferably in the range of 20 mm or less, and the slit pattern is in the vertical direction, horizontal direction, diagonal direction, or a combination thereof. Or it may be crossing. The shape of the slit is not particularly limited, such as a linear shape, a curved shape, or a wavy shape. Further, these slits may penetrate in the thickness direction or may not penetrate. Furthermore, by further providing another slit in the direction orthogonal to the slit, when the vestibular floor presses a region straddling the crease line with a strong pressure, a region straddling the crease line is distributed so as to disperse the pressure in multiple directions. Since it swells and deforms, it is very difficult to give a feeling of wearing, which is preferable.

  (4) The interlabial pad according to (1) or (2), wherein the pressure dispersing means has an embossed pattern applied to a region straddling the crease line.

  The region straddling the crease line of the interlabial pad according to (4) is subjected to embossing as pressure dispersing means. In this way, by applying embossing to the region straddling the crease line, rebound rigidity can be imparted to the region straddling the crease line. Therefore, according to the interlabial pad in (4), when the wearer sits on a chair and presses the area where the vestibular floor straddles the crease line with strong pressure, the area straddling the crease line having rebound rigidity Can easily swell and deform to disperse the pressure in the outer direction that intersects the direction of the pressure. For this reason, the interlabial pad hardly repels pressure and presses the vestibule floor, and the wearer feels almost no feeling of use and can live a comfortable daily life.

  The emboss pattern is not particularly limited, such as a dot shape, a line shape, a wave shape, or a lattice shape. In the case where a plurality of dot-shaped embosses are applied within the range of 5 mm or more and 20 mm or less in a region straddling the crease line, or when the linear embossment is in a direction substantially perpendicular to the crease line, the dimension is 5 mm or more and 20 mm or less. Is provided in a range of 5 mm or more and 20 mm or less. Moreover, not only the case where these slit processes and embossing are given to an absorber, you may give to the surface side sheet | seat and the back surface side sheet | seat.

  (5) The interlabial pad is provided with a liquid-permeable elastic sheet on the side opposite to the body, and the pressure dispersing means is provided on the elastic sheet. Pad between.

  The interlabial pad according to (5) is provided with a liquid poorly permeable elastic sheet provided with pressure dispersing means, and the elastic sheet is provided so as to straddle the crease line. Here, “elasticity” means a property that when an external force is applied to an object, the object is deformed, and when the force is removed, the object immediately returns. That is, the elastic sheet provided on the interlabial pad according to (5) has a property of being easily deformed and restored. For this reason, in the interlabial pad according to (5), when the wearer sits on a chair and the vestibular floor presses a region straddling the crease line with a strong pressure, the region straddling the crease line having an elastic sheet Can easily swell and deform to disperse the pressure in the outer direction that intersects the direction of the pressure. For this reason, the interlabial pad hardly repels pressure and presses the vestibule floor, and the wearer feels almost no feeling of use and can live a comfortable daily life.

  As a method for imparting elasticity to the elastic sheet, a method using an elastic material may be used. By using an elastic material for the elastic sheet, when pressure is applied to the area straddling the crease line from the vestibule floor, the area straddling the crease line is easily swelled and deformed, and the pressure can be easily applied in the outer direction intersecting the direction of pressure. It is possible to disperse them. Examples of the elastic material include a laminate of elastic fibers and a film, and a foamed material having air cells. Examples of the elastic fiber include fibers made of a thermoplastic material such as PE, PP, and PET, and each resin having a single or core-sheath structure or side-by-side structure. Preferably, the fiber is subjected to secondary crimping by machine or heat. In consideration of wearing feeling, the fiber thickness is preferably in the range of 0.5 to 8.8 dtex, and the fiber length is preferably adjusted in the range of 3 mm to 64 mm. A laminate of these fibers can be obtained by a method of laminating fibers with a card, bonding them by melting thermoplastic fibers, and then forming by a through air method. The nonwoven fabric obtained by this method is preferable because it has a resilience elastic force. In addition, commonly used point bonds, spun bonds, WJ, spun bonds in which continuous filaments are spun and bonded by hot embossing, SMS sheets in which melt blow is blown onto the spun bonds, and the like can also be used. Furthermore, the chemical bond and the airlaid method which bond by apply | coating a binder to the surface after fiber lamination can also be used. On the other hand, as a film having elasticity, a film obtained by extruding a resin such as PE, PP having elasticity, urethane, rubber, etc. having high elasticity in a single, composite, or multilayer with a T-die or inflation. Is used. As the foamed material, a material obtained by foaming a resin such as PE or PP having elasticity or urethane or rubber having high elasticity is used. Note that the above-described materials may be used singly, or may be multilayered by being fixed with an adhesive or emboss, or may be given elasticity or rigidity in a certain direction by embossing.

Another method for imparting elasticity to the elastic sheet is to provide a plurality of minute convex portions on the elastic sheet. By providing a plurality of minute protrusions on the elastic sheet, in the region straddling the crease line, the opposing elastic sheets cannot be contacted with each other and are gently curved to form a space between the elastic sheets. . For this reason, when pressure is applied to the area across the crease line from the vestibule floor, the area over the crease line swells and deforms easily, and the pressure can be easily dispersed in the outer direction intersecting the direction of pressure. It becomes. Specifically, it is preferable to form a space without elastic contact between the elastic sheets within a range where the length in the overall short direction of the region straddling the crease line is 0.5 mm or more and 40 mm or less. More preferably, the portion where the elastic sheets do not completely contact each other has a total length in the short direction of the region straddling the crease line within a range of 0.5 mm or more and 30 mm or less. Moreover, it is preferable that the plurality of minute convex portions are provided in a range in which the length in the overall short direction of the region straddling the crease line is not less than 0.5 mm and not more than 40 mm. Furthermore, the height of the minute projections is preferably in the range of 0.05 mm to 2 mm, and the interval between the minute projections is preferably in the range of 0.3 mm to 20 mm. For example, a film mainly composed of a low density polyethylene (LDPE) resin having a plurality of minute convex portions arranged in a staggered pattern with a height of minute convex shapes of 0.2 mm and an interval of 1.5 mm can be used. . If such a plurality of minute convex portions are provided, the material used for the elastic sheet is not limited to the elastic material described above. For example, polyethylene, polypropylene, polyethylene terephthalate, polyvinyl alcohol, polylactic acid, polybutyl succinate, or non-woven fabric, paper, and laminate materials thereof, which are materials of a hardly water-permeable sheet, can be used. . A breathable film obtained by filling an inorganic filler and subjecting it to stretching may also be used. In addition, a low-density polyethylene (LDPE) resin as a main component, having an aperture of 10 to 30%, an aperture film adjusted in the range of 0.1 to 0.6 mm in pore diameter and 15 to 35 g / m ² in basis weight, etc. May be used.

  (6) The interlabial pad is provided with a mini-sheet piece having elasticity on the side opposite to the body, and the pressure dispersing means is provided on the mini-sheet piece (1) The interlabial pad as described.

  The interlabial pad according to (6) includes a mini sheet piece provided with pressure dispersion means on the side opposite to the body, and a mini sheet piece having elasticity is attached so as to straddle the crease line. That is, the interlabial pad according to (6) has a mini sheet piece having a property of being easily deformed and restored in a region straddling the crease line. Therefore, according to the interlabial pad according to (6), when the wearer sits on a chair and presses the area where the vestibule floor straddles the crease line with a strong pressure, the crease line having the mini sheet piece is removed. The straddling region can be easily swelled and deformed, and the pressure can be dispersed in the outer direction intersecting the direction of the pressure. For this reason, the interlabial pad hardly repels pressure and presses the vestibule floor, and the wearer feels almost no feeling of use and can live a comfortable daily life. In addition, it is possible to give elasticity to a mini sheet piece by using an elastic material for the mini sheet piece, and specifically, the same material as the elastic material used for the elastic sheet described above is used.

  (7) The interlabial pad according to (6), wherein the mini sheet piece is one in which one surface of the mini sheet piece is joined to the anti-body side surface over the entire surface.

  The elastic mini sheet piece provided so as to straddle the crease line of the interlabial pad according to (7) has one surface joined to the opposite side surface over the entire surface. Accordingly, since one surface of the elastic mini sheet piece is entirely in contact with the region straddling the crease line of the interlabial pad, sufficient elasticity can be imparted to the region straddling the crease line. According to the interlabial pad according to (7) provided with such a mini-sheet piece having elasticity, when the wearer sits on a chair or the like, the vestibular floor presses the region across the crease line with strong pressure. The region straddling the crease line having the mini sheet piece is easily expanded and deformed, and the pressure can be dispersed in the outer direction intersecting the direction of the pressure. For this reason, the interlabial pad hardly repels pressure and presses the vestibule floor, and the wearer feels almost no feeling of use and can live a comfortable daily life.

  (8) The mini-sheet piece includes the anti-body side surface and the mini-sheet piece which are opposed to the anti-body side surface that straddle the crease line so as to restrict the interlabial pad from spreading in a folded state. The interlabial pad according to (6), wherein the pads are joined so that a space is formed between them.

  The elastic mini sheet pieces provided so as to straddle the crease line of the interlabial pad according to (8) are joined so as to bridge the opposite opposite body side surfaces. Accordingly, since the opposite side surfaces of the opposing mini-sheet pieces having elastic properties are bridged, the two folded pieces are difficult to deform, while the region straddling the crease line is easily deformed. . According to the interlabial pad according to (8) provided with such a mini-sheet piece having elasticity, when the wearer sits on a chair or the like, the vestibular floor presses a region straddling the crease line with strong pressure. The region straddling the crease line having the mini sheet piece is easily expanded and deformed, and the pressure can be dispersed in the outer direction intersecting the direction of the pressure. For this reason, the interlabial pad hardly repels pressure and presses the vestibule floor, and the wearer feels almost no feeling of use and can live a comfortable daily life. In the interlabial pad according to (8), since a space is formed between the mini sheet piece and the non-body side surface, this space can also be used for finger insertion. In order to use it for inserting a finger, the inner peripheral edge of the formed space is preferably 40 mm or more.

  (9) The both ends in the longitudinal direction are bent in the direction of the side of the body so as to reduce the pressure generated on the interlabial pad in accordance with the movement of the wearer. The interlabial pad according to any one of (1) to (8), wherein a flexible line serving as an axis of bending is provided at an end.

  A flexible line is provided at both ends in the longitudinal direction of the interlabial pad according to (9) so that it can be bent toward the side of the body. Usually, in the case of a folded interlabial pad, the side end in the longitudinal direction of the interlabial pad is exposed without being accommodated in the labia at the time of wearing. Susceptible to pressure by movement. On the other hand, the interlabial pad according to (9) eliminates the protruding portion by bending both longitudinal ends in the direction of the body side surface, and can reduce the pressure received. Therefore, even when pressure is applied to the interlabial pad from the outside, the wearer hardly feels the feeling of use. Furthermore, since both end portions in the longitudinal direction are bent toward the side of the body, it can be more easily fitted to the labia, and it is possible to effectively prevent menstrual blood from flowing out and dropping of the interlabial pad.

  In addition, as a method of providing this flexible wire, in addition to a method of embossing etc. so as to form a linear continuous or intermittent pattern on the absorbent material, a linear continuous or intermittent pattern on the absorbent material Examples thereof include a method of cutting with a cutter or the like so as to form, and a method of zoning materials having different rigidity to an absorbent material to form regions having different rigidity. Also, in order to more effectively prevent menstrual flow and drop of the interlabial pad, etc., the size of the side edges that can be folded is determined by taking into account the external shape of the labia and the distance to the leg openings. The range of 15 mm or more and 50 mm or less is preferable, and the range of 25 mm or more and 40 mm or less is more preferable. On the other hand, the width is preferably in the range of 3 mm to 30 mm, more preferably in the range of 5 mm to 20 mm.

  (10) The interlabial pad according to any one of (1) to (9), wherein the interlabial pad is an interlabial pad for urinary incontinence.

  The interlabial pad according to (10) can be used as an absorption pad for urinary incontinence. That is, since the vaginal opening for discharging menstrual blood and the urethral opening for discharging urine are both located between the labia, when the interlabial pad according to (10) is used between the labia, Can absorb urine. Thus, according to the interlabial pad according to (10), since urine can be absorbed between the labia, particularly in the vicinity of the urethral opening, an effective absorption pad can be obtained for urinary incontinence, particularly mild urinary incontinence. .

  (11) The interlabial pad according to any one of (1) to (10), wherein the interlabial pad is an interlabial pad for absorbing vaginal discharge.

  According to the interlabial pad according to (11), the interlabial pad can be used for absorbing vaginal discharge. That is, since the interlabial pad according to (11) is used by being sandwiched between the labia, it can also absorb secretions other than menstrual blood from the vaginal opening. It can also be used for absorption of vaginal discharge. Thus, according to the interlabial pad according to (11), the discomfort of the wearer can be reduced by absorbing the vaginal discharge, which is also effective for the wearer other than menstruation.

  (12) An interlabial pad package in which the interlabial pad according to any one of (1) to (11) is sealed in an individual packaging container.

  In the interlabial pad package according to (12), each interlabial pad is enclosed in an individual packaging container, substantially sealed, and filled with air. For this reason, even when the wearer carries the individual packaging container in the bag and carries it, even if an external pressure is applied to the individual packaging container, the external pressure can be buffered by air. In particular, since the external pressure applied in the direction of folding in two from the lateral direction can be buffered with respect to the region straddling the crease line, the region straddling the crease line does not have a pointed shape and maintains a gently curved state. be able to. Therefore, according to the interlabial pad package according to (12), even if an external pressure is applied during carrying, the pad is not crushed, and the region straddling the crease line can be maintained in a gently curved state. Therefore, it is possible to provide an interlabial pad that hardly feels use.

  The volume of the individual packaging container used for the interlabial pad package according to (12) is at least larger than the volume of the interlabial pad. Specifically, the length of the individual packaging container is preferably larger than the length in the longitudinal direction of the interlabial pad in a range not exceeding 80 mm, and more preferably in a range not exceeding 40 mm. In addition, the width of the individual packaging container is preferably larger than the length in the short direction of the interlabial pad in a range not exceeding 80 mm, and more preferably large in a range not exceeding 40 mm. The thickness of the individual packaging container is preferably larger than the thickness of the interlabial pad within a range not exceeding 80 mm, and more preferably larger than a range not exceeding 40 mm. In addition, it is preferable that the filling rate of the air in an individual packaging container exists in the range of 5-60%, More preferably, it exists in the range of 10-40%. The individual packaging container having such a size can be formed by a single non-breathable sheet. Specifically, after the folded interlabial pad is wrapped with a non-breathable sheet, a seal portion for joining the non-breathable sheets is provided in a region where the non-breathable sheets formed by wrapping are overlapped. The individual packaging container is formed by the above. In addition, about the area | region used as an opening part among the area | regions where air-impermeable sheet bodies overlap, the tape which has adhesive force may be provided in order to improve openability more.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is a case where pressure is applied with respect to the interlabial pad from the outside with a wearer's operation | movement, a wearer can provide the interlabial pad which hardly feels a feeling of use. .

It is sectional drawing when the interlabial pad 10 which concerns on 1st Embodiment of this invention which is wearing is cut | disconnected in the transversal direction. 3 is a view for explaining a state when pressure is applied to a region straddling the crease line of the interlabial pad 10; It is a cross-sectional perspective view when the said interlabial pad 10 is cut | disconnected in the transversal direction. It is a perspective view when the said interlabial pad 10 is opened. It is a perspective view when the said interlabial pad 10 is folded in half. FIG. 6 is a cross-sectional view when the interlabial pad 10 in FIG. 5 is cut in the X1-X2 direction. FIG. 6 is a cross-sectional view when the interlabial pad 10 in FIG. 5 is cut in the X3-X4 direction. It is a manufacturing process figure for demonstrating the opening method of a fiber assembly. It is sectional drawing when it cut | disconnects in the transversal direction in the state which folded the interlabial pad 10a which concerns on the modification 1 of 1st Embodiment in half. It is a perspective view when the interlabial pad 10b which concerns on 2nd Embodiment is opened. It is a perspective view of the absorber 12b of the said interlabial pad 10b. It is a perspective view when the said interlabial pad 10b is folded in half. It is sectional drawing when the interlabial pad 10b in FIG. 12 is cut | disconnected in X5-X6 direction. It is sectional drawing when it cut | disconnects in the transversal direction in the state which folded the interlabial pad 10c which concerns on 3rd Embodiment in half. It is sectional drawing when it cut | disconnects in the transversal direction in the state which folded the interlabial pad 10d which concerns on the modification 1 of 3rd Embodiment in half. It is sectional drawing when it cut | disconnects in a transversal direction in the state which opened the interlabial pad 10e which concerns on 4th Embodiment. It is sectional drawing when it cut | disconnects in a transversal direction in the state which opened the interlabial pad 10f which concerns on the modification 1 of 4th Embodiment. It is sectional drawing when it cut | disconnects in a transversal direction in the state which opened the interlabial pad 10g which concerns on the modification 2 of 4th Embodiment. It is a perspective view of the absorber 12h of the interlabial pad 10h which concerns on 5th Embodiment. It is the top view seen from the antibody side in the state where the interlabial pad 10i concerning a 6th embodiment was opened. It is sectional drawing when cut | disconnecting in the transversal direction in the state which folded the said interlabial pad 10i in half. It is the top view seen from the antibody side in the state where the interlabial pad 10j concerning the modification 1 of 6th Embodiment was folded in half. It is sectional drawing when cut | disconnecting in the transversal direction in the state which folded the said interlabial pad 10j in half. It is sectional drawing when it cut | disconnects in the transversal direction in the state which folded the interlabial pad 10k which concerns on the modification 2 of 6th Embodiment in half. It is the top view seen from the antibody side in the state where the interlabial pad 10m concerning the modification 3 of 6th Embodiment was folded in half. It is sectional drawing when the interlabial pad 10m in FIG. 25 is cut | disconnected in X7-X8 direction. It is sectional drawing when the interlabial pad 10m in FIG. 25 is cut | disconnected in X9-X10 direction. It is a top view of the interlabial pad package 30 which enclosed the interlabial pad 1 in the individual packaging container, and was sealed.

Explanation of symbols

1, 10, 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h, 10i, 10j, 10k, 10m Interlabial pad 2 Region across the crease line 11 Pressure dispersion means 12, 12b, 12h Absorbent 14 Surface side Sheet 15 Back side sheet 16 Flexible line 17 Rigid material 18 Convex part 25 Joint part 30 Interlabial pad packaging 31 Seal

BEST MODE FOR CARRYING OUT THE INVENTION

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of each embodiment other than the first embodiment, the description of the configuration, operation, and effect common to the first embodiment will be omitted.

<First Embodiment>
[Overall configuration of interlabial pad]
FIG. 4 is a perspective view when the interlabial pad 10 according to the first embodiment of the present invention is opened. As shown in FIG. 4, the interlabial pad 10 according to the present embodiment has a substantially vertically long shape, and has a shape having a longitudinal direction and a short side direction. The interlabial pad 10 has a front side sheet 14 and a back side sheet 15, and an absorbent material 12 is disposed between the front side sheet 14 and the back side sheet 15. The front side sheet 14 is a liquid-permeable sheet that permeates the body fluid of the wearer, and the back side sheet 15 is a liquid-impermeable sheet that does not substantially permeate the body fluid of the wearer. A pressure dispersion means 11 is provided at a substantially central portion of the absorbent material 12. The external dimension of the interlabial pad 10 according to the present embodiment is approximately 100 mm in length in the longitudinal direction in consideration of the external shape of the labia and the size of the space formed between the labia and the shorts. The width of both folded pieces is approximately 30 mm.

  Moreover, as shown in FIG. 5, the interlabial pad 10 according to the present embodiment is of a type that is used by being folded in two so that the back side sheets 15 face each other at the crease line extending in the longitudinal direction when worn. Is. Further, the interlabial pad 10 folded in half is provided with a pressure dispersion means 11 in an absorbent material 12 in a region along the fold line extending in the longitudinal direction, and at least one of the regions along the fold line. It is sandwiched between the labia so that the part contacts the vestibular floor.

[Surface sheet]
A liquid permeable sheet is used for the surface side sheet 14, specifically, a fiber in which natural cotton is mixed at a ratio of 5% to 30% and rayon or acetate rayon is mixed at a ratio of 70% to 95% with a basis weight of 20 g. / m ² or more 50 g / m ² was prepared in the following range, dried by entangling the fibers by hydroentanglement, spunlace nonwoven fabric thickness was prepared in a range of 0.3mm or more 1.0mm or less Is used. In the case of natural cotton, the fiber length is in the range of 15 mm to 60 mm, the ray length or acetate rayon is in the range of 25 mm to 51 mm, and the fineness is in the range of 1.1 dtex to 6.6 dtex. Is.

[Back side sheet]
In general, as the back side sheet, a sheet that can prevent menstrual blood absorbed and held in the absorbent material 12 from leaking out of the interlabial pad 10 is used. Moreover, by using a moisture-permeable material, it is possible to reduce stuffiness during wearing, and to reduce discomfort during wearing. Specifically, as the back side sheet 15, a breathable film obtained by filling with an inorganic filler and subjecting it to stretching, has a hole of 10% or more and 30% or less, and a hole diameter of 0.1 mm or more and 0.6 mm. A breathable liquid blocking sheet obtained by disposing a capillary so as to face the absorbent material 12 in the following range is used. In consideration of flexibility that does not impair the wearing feeling, for example, the basis weight is mainly a low density polyethylene (LDPE) resin having a density in the range of 0.90 g / cm ³ or more and 0.925 g / cm ³ or less. form using a film obtained from 15 g / ^{m 2} or more 30 g / ^{m 2} or less in the range is given as a modified example.

[Absorbent]
In general, as an absorbent material provided in the interlabial pad, pulp, chemical pulp, rayon, acetate, natural cotton, polymer absorbent, fibrous polymer absorbent, synthetic fiber alone or a mixture thereof are used. can do. Moreover, what processed these materials into the sheet form or the powder form can also be used. As an absorbent material, there is no problem as long as it can absorb and retain body fluids, but it is preferable that the absorbent material is bulky, is not easily deformed, and has little chemical irritation to the body. Specifically, as the absorbent material 12, rayon or acetate selected from a range of fineness of 1.1 dtex or more and 4.4 dtex or less is 60% or more and 90% or less, and the fibrous polymer absorber is 10% or more and 40% or less. A nonwoven fabric sheet having a bulk weight of 50 g / m ² or more and 250 g / m ² or less and 2 mm or more and 5 mm or less is used by tying fibers laminated at a mixing ratio into a sheet by needling. In addition, when incorporating the absorbent material 12 into the interlabial pad 10, the bulk is changed, overlapped, folded, or the like as necessary.

[Pressure dispersion means]
6 is a cross-sectional view when the interlabial pad 10 in FIG. 5 is cut in the X1-X2 direction. 7 is a cross-sectional view when the interlabial pad 10 in FIG. 5 is cut in the X3-X4 direction. As shown in FIGS. 6 and 7, the pressure dispersing means 11 is provided at a substantially central portion of the absorbent material 12 so as to straddle the crease line. Thus, it is not necessary to provide the pressure dispersion means 11 over the entire range of the absorbent material 12, and a sufficient effect can be achieved even if it is provided only in a narrow region in the substantially central portion.

The pressure dispersion means 11 is composed of a fiber assembly having fibers oriented so as to cross the crease line. Specifically, a fiber obtained by laminating rayon or acetate rayon selected from the range of 1.1 dtex or more and 6.6 dtex or less in a mixing ratio of 60% or more and 95% or less and natural cotton in a mixing ratio of 5% or more and 40% or less, A nonwoven fabric sheet having a basis weight of 50 g / m ² or more and 500 g / m ² or less and having a bulk of 1 mm or more and 20 mm or less is used. In addition, pressure dispersion means using the above fibers made into a sheet by the airlaid method, melt-prone method, spunlace method, papermaking method, etc., and those that have been embossed in the form of dots, lattices, etc. What was used as 11 is mentioned as a modification.

  In addition, as a method for providing a fiber that is oriented crossing the crease line, a method of randomly orienting the fiber is used. Hereinafter, a method for randomly orienting fibers of a fiber assembly having a long fiber length will be described with reference to FIG. FIG. 8 is a manufacturing process diagram for explaining a method of opening the fiber assembly constituting the pressure dispersion means. The fiber assembly sheet 102 is moved by a pair of rolls 103 from a winding roll 101 around which the fiber assembly sheet 102 is wound. It is conveyed to the opening device 100A. The fiber opening device 100 </ b> A has a garnet-type fiber opening roll 104 in which wavy blades are arranged in multiple lines, and is opened by passing through the fiber opening roll 104. At this time, in order to improve the spreadability, a plurality of rolls 105 and 105 ′ arranged in a staggered manner so that the tips of adjacent wavy blades arranged in a plurality of rows are staggered are reversely rotated with the spread roll 104. It is more preferable to pass in combination so as to turn in the direction of. The opening method is not limited to the garnet method, and may be a hammer mill method or the like.

  The fibers 106 thus opened are suction-sucked from a suction suction device 107 provided on the inner surface of the mesh-shaped transport belt 108, whereby the fibers 106 are aggregated and stacked on the transport belt 108. . At this time, at the same time as the fibers are separated from the wavy blades of the opening roll 104, a suction speed is given to the fibers 106 opened by suction suction. If the suction suction pressure is in the range of 1500 Pa to 15000 Pa, the opened fiber 106 is given a collection speed of 4 m / sec to 200 m / sec (240 m / min to 1200 m / min), The collection speed given to the opened fiber 106 is relatively higher than the conveyance speed of the conveyance belt 108 of 20 m / min or more and 200 m / min or less, and the fiber orientation becomes difficult to move in the MD direction. Here, the MD direction is the traveling direction of the conveying belt 108, that is, the traveling direction of the fiber assembly 109.

  Thus, in order to randomly orient the fiber orientation of the fiber assembly 109 having a long fiber length, when the opened fiber 106 is laminated on the conveying belt during the manufacturing process, immediately after the fiber opening. This is possible by increasing the collection speed applied to the fiber 106 relatively higher than the conveyance speed of the conveyance belt 108. The collection speed given to the opened fiber 106 is mainly determined by the suction suction force of the suction suction device 107 provided on the inner surface of the mesh-shaped transport belt 108. In order to make the collection speed applied to the fibers relatively higher than the conveyance speed of the conveyance belt, when the conveyance speed is in the range of 20 m / min or more and 200 m / min or less, the laminated fiber aggregate 109 and the mesh shape It is possible to select the suction suction pressure through the conveyor belt from the range of 1500 Pa to 15000 Pa. If the suction suction pressure is less than 1500 Pa, the fiber tends to be directed to the MD depending on the conveyance speed. If it exceeds 15000 Pa, the fiber 106 is too entangled with the mesh for the conveyance belt, and the fiber assembly 109 is delivered to the subsequent process. Since it becomes difficult, it is not preferable.

[Action, effect]
In the interlabial pad 10 according to the first embodiment, since the pressure dispersion means 11 is provided on the absorbent material 12 across the crease line, the vestibular floor is placed between the labial areas with a strong pressure on the vestibular floor, for example, by sitting on a chair. When the region 2 straddling the crease line of the pad 10 is pressed from above, as shown in FIGS. 1 and 2, the region 2 straddling the crease line having rebound rigidity easily swells to the left and right and deforms. The pressure can be distributed in the outer direction that intersects the direction of. For this reason, the interlabial pad 10 hardly repels the pressure and presses the vestibule floor, and the wearer feels little feeling of use and can live a comfortable daily life.

[Modification 1]
Modification 1 of the first embodiment is characterized in that a rigid material 17 is used in a part of the absorbent material 12 in a region that does not straddle the crease line of the interlabial pad 10 according to the first embodiment. Is. FIG. 9 is a cross-sectional view of the interlabial pad 10a according to the first modification of the first embodiment, which is cut in the lateral direction in a state of being folded in half. Specifically, a part obtained by laminating a pulp having a fiber length of 8 mm or less as a rigid material 17 at a basis weight of 100 g / m ² is used as a part of the absorbent material 12 in a region that does not cross the crease line. Used is a mixture of 85 g of rayon with a fiber length of 51 mm and a fineness of 3.3 dtex and 15% of natural cotton, with the fibers oriented so as to cross the crease line and laminated at 180 g / m ^2. Yes. In addition, the crease line in the first modification is on the longitudinal center line, and the region 2 across the crease line is within 5 mm from the longitudinal center line in the lateral direction, that is, within 10 mm across the longitudinal center line. Range. Further, the absorbent 12 is embossed with a dot-like emboss pattern with an emboss area ratio of 1.8%. According to the interlabial pad 10a according to the first modified example, when the vestibular floor contacts the region 2 straddling the crease line with a strong pressure, the region not straddling the crease line having the rigid material 17 is deformed. Since it becomes difficult, the area | region 2 straddling a crease line expand | swells still more easily, it becomes easy to deform | transform, a strong repulsive force is not given to a vestibular floor, and a wearer hardly feels a feeling of use. Instead of using the rigid material 17, it is possible to adopt a form in which rigidity is given by increasing the basis weight of the absorbent material 12, increasing the density, or adding an adhesive.

[Modification 2]
In the second modification of the first embodiment, slit processing is performed as the pressure dispersing means 11 provided in the interlabial pad 10 according to the first embodiment. Specifically, the slit dimensions are in the range of 1 mm or more and 20 mm or less, the pitch is in the range of 20 mm or less, and the slit patterns intersect. The shape of the slit is linear, and these slits penetrate in the thickness direction. According to the second modification of the first embodiment, an effect equivalent to the effect according to the first embodiment can be obtained.

[Modification 3]
The modification 3 of 1st Embodiment is embossed as the pressure distribution means 11 provided in the interlabial pad 10 which concerns on 1st Embodiment. Specifically, a plurality of dot-shaped embosses are applied to a region straddling the crease line within a range of a pitch of 5 mm or more and 20 mm or less. According to the third modification of the first embodiment, an effect equivalent to the effect according to the first embodiment can be obtained.

[Modification 4]
The modification 4 of 1st Embodiment provides the pressure distribution means 11 in the surface side sheet | seat 14 in the area | region 2 straddling the crease line of the interlabial pad 10 which concerns on 1st Embodiment. The pressure dispersion means 11 in this modification 4 is comprised with the fiber assembly which has the fiber orientated crossing the crease line. Specifically, a fiber assembly in which fibers used for the surface side sheet 14 are oriented crossing the crease line is used as the pressure dispersion means 11. The effect equivalent to 1st Embodiment can be acquired also by providing the pressure distribution means 11 in the surface side sheet like this modification 4.

Second Embodiment
FIG. 10 is a perspective view of the interlabial pad 10b according to the second embodiment. As shown in FIG. 10, the interlabial pad 10b according to the second embodiment is provided with flexible lines 16 at both longitudinal ends of the interlabial pad 10 according to the first embodiment. For this reason, as shown in FIG. 12, the interlabial pad 10b is folded in two, and both ends in the longitudinal direction are folded in the direction of the side of the body with the flexible line 16 as the bending axis. It is structured to be sandwiched between.

[Flexible line]
FIG. 11 is a perspective view of the absorbent material 12b of the interlabial pad 10b according to the second embodiment. As shown in FIG. 11, the flexible line 16 is provided at both ends of the absorbent material 12b. More specifically, the longitudinal direction of the absorbent material 12b is at a position approximately 10 mm away from both side edges of the absorbent material 12b. It is provided substantially parallel to the center line. The flexible line 16 is formed by embossing a linear continuous pattern on both ends of the absorbent material 12b.

[Action, effect]
13 is a cross-sectional view of the interlabial pad 10b shown in FIG. 12 taken along the X5-X6 direction. As shown in FIG. 13, since the interlabial pad 10b is provided with the pressure dispersion means 11 so as to straddle the crease line, the same effect as that of the first embodiment can be obtained. In addition, since both side ends in the longitudinal direction are bent toward the side of the body, and the side end of the interlabial pad does not protrude to the anti-body side, the pressure applied to the interlabial pad 10b by the wearer's movement is received. Can be reduced. Therefore, the interlabial pad 10b can disperse the pressure received from the vestibular floor in accordance with the wearer's movement and is less likely to receive pressure from the vestibular floor in the first place. There is almost no. Furthermore, it has a shape that can be more easily fitted to the labia, and can effectively prevent menstrual blood from flowing out and the interlabial pad 10b from dropping.

<Third Embodiment>
In the interlabial pad 10 according to the first embodiment and the interlabial pad 10b according to the second embodiment, the pressure dispersion means 11 is provided in each of the absorbent material 12 and the absorbent material 12b. On the other hand, in the interlabial pad 10c according to the third embodiment, the pressure dispersing means 11 is provided not on the absorbent material 12 but on an elastic sheet provided on the side opposite to the body. FIG. 14 is a cross-sectional view of the interlabial pad 10c when it is cut in the lateral direction in a state of being folded in half. As shown in FIG. 14, in the interlabial pad 10c, an elastic sheet is provided over the entire surface of the opposite side of the body, and the same effect as in the first embodiment can be obtained. In addition, since the elastic sheet should just be provided in the area | region straddling a crease line, the form provided only in the area | region straddling a crease line is also employable.

  The elastic sheet is made of a thermoplastic material having elasticity such as PE, PP, PET, etc., and a resin obtained by subjecting each resin to a single or core-sheath structure or side-by-side structure subjected to secondary crimping is used. . The fiber thickness is adjusted within the range of 0.5 dtex or more and 8.8 dtex or less, and the fiber length is adjusted within the range of 3 mm or more and 64 mm or less. After laminating these fibers and bonding them by melting thermoplastic fibers, an elastic sheet is formed by a method of forming by a through air method.

[Modification 1]
The interlabial pad 10d according to the first modification of the third embodiment includes an elastic sheet provided with a plurality of minute convex portions as the pressure dispersion means 11 on the side opposite to the body in the region straddling the crease line. . FIG. 15 is a cross-sectional view when the interlabial pad 10d according to the first modification of the third embodiment is cut in the short-side direction in a folded state. In this modified example 1, the convex portion is provided over the entire surface of the opposite side of the body, but the length in the overall short direction of the region 2 straddling the crease line is within a range of 0.5 mm to 30 mm. It only has to be provided. In addition, a film mainly composed of a low density polyethylene (LDPE) resin having a plurality of minute convex portions arranged in a staggered pattern is used with a minute convex shape having a height of 0.2 mm and an interval of 1.5 mm. ing. Thus, the modification 1 of 3rd Embodiment provided with the elastic sheet which provided the several micro convex part as the pressure dispersion | distribution means 11 can also acquire the effect equivalent to the effect which concerns on 1st Embodiment. it can.

<Fourth embodiment>
FIG. 16 is a cross-sectional view of the interlabial pad 10e according to the fourth embodiment when cut in the short direction with the open state. As shown in FIG. 16, the interlabial pad 10 e according to the fourth embodiment is such that an elastic sheet member is disposed between the absorbent material 12 and the surface side sheet 14 as the pressure dispersing means 11. . Further, as a modified example in which the arrangement of the pressure dispersing means 11 is changed, the interlabial pad 10f (modified example 1) disposed between the back sheet 15 and the absorbent material 12 or a sandwiched form in the absorbent material 12 is disposed. An interlabial pad 10g (Modification 2) is mentioned. Cross-sectional views of the interlabial pad 10f according to the first modification and the interlabial pad 10g according to the second modification when cut in the lateral direction in an open state are shown in FIGS. 17 and 18, respectively. As the elastic sheet member, a nonwoven fabric using an elastic material is used. More specifically, a nonwoven fabric obtained by laminating PE fibers having elasticity and bonding them by melting thermoplastic fibers, and then forming by a through air method is used. Thus, even if it is a type provided with the sheet member which has elasticity, the effect equivalent to the effect concerning a 1st embodiment can be acquired.

<Fifth Embodiment>
FIG. 19 is a perspective view of the absorbent material 12h of the interlabial pad 10h according to the fifth embodiment. As shown in FIG. 19, the absorbent material 12h of the interlabial pad 10h according to the fifth embodiment is embossed as pressure dispersion means 11 in a region straddling the crease line. The embossing is provided in a straight line substantially parallel to the center line of the absorbent material 12h in the short direction so as to straddle the crease line. Further, the embossing is a flat pattern embossing, and is formed by passing an absorbent material between two rolls having a flat embossing pattern. Thus, also in 5th Embodiment which gave embossing as the pressure distribution means 11, the effect equivalent to the effect which concerns on 1st Embodiment can be acquired.

<Sixth Embodiment>
FIG. 20 is a plan view seen from the side opposite to the body with the interlabial pad 10i according to the sixth embodiment open. A mini-sheet piece is provided as a pressure dispersion means 11 at a substantially central portion on the side opposite to the body of the interlabial pad 10i. This mini sheet piece is joined to the back side sheet 15 so that one side of the mini sheet piece covers the entire surface, and is joined to the back side sheet so as to straddle the crease line when folded in half. . FIG. 21 is a cross-sectional view when the interlabial pad 10i folded in half is cut in the lateral direction. The mini sheet piece has elasticity, and a nonwoven fabric using an elastic material is used. More specifically, a nonwoven fabric obtained by laminating PE fibers having elasticity and bonding them by melting thermoplastic fibers, and then forming by a through air method is used. As described above, according to the interlabial n-pad 10i according to the sixth embodiment in which the mini-sheet piece is attached to the side opposite to the body in the region straddling the crease line, an effect equivalent to the effect according to the first embodiment can be obtained. it can.

[Modification 1 and Modification 2]
FIG. 22 is a plan view seen from the side opposite to the body with the interlabial pad 10j according to Modification 1 of the sixth embodiment folded in half. As shown in FIG. 22, in the first modification, the mini sheet piece is joined to the opposite body side across the crease line so that a space is formed between the mini sheet piece and the opposite body side. Yes. FIG. 23 is a cross-sectional view when the interlabial pad 10j is cut in the short-side direction in a folded state. As shown in FIG. 23, the mini-sheet piece of the interlabial pad 10j according to Modification 1 has a substantially inverted V shape in FIG. On the other hand, what has a substantially inverted W shape is the interlabial pad 10k according to the modified example 2, and FIG. 24 shows the interlabial pad 10k according to the modified example 2 folded in half in the short direction. It is sectional drawing when cut | disconnecting. According to the interlabial pad 10j according to Modification 1 and the interlabial pad 10k according to Modification 2 provided with these mini sheet pieces, the same effects as those according to the first embodiment can be obtained. Moreover, the space formed between the mini sheet piece and the non-body side surface can also be used for finger insertion for the wearer to insert a finger. The interlabial pads 10j and 10k are manufactured by folding in half and then joining the mini sheet pieces to the opposite opposite body sides.

[Modification 3]
FIG. 25 is a plan view seen from the side opposite to the body with the interlabial pad 10m according to Modification 3 of the sixth embodiment folded in half. In the interlabial pad 10m, the mini sheet piece is provided so as to straddle from one side edge in the longitudinal direction to the other side edge and biased to one side in the longitudinal direction. In addition, the mini sheet piece is joined to the opposite side surface at both ends in the longitudinal direction, and is joined to the opposite side surface at one end in the longitudinal direction that is biased. FIG. 26 is a cross-sectional view when the interlabial pad 10m in FIG. 25 is cut in the direction of X7-X8, and FIG. 27 is a cross-sectional view when cut in the direction of X9-X10. As described above, the interlabial pad 10m according to the modification 3 has a structure in which the anti-body side surface is covered with the mini sheet piece over a wide range and is hardly subjected to external pressure in the first place. The effect which concerns on a form can be exhibited more effectively. Also, the space formed between the mini sheet piece and the non-body side can be used for finger insertion, and the end on one side is joined to the non-body side, resulting in a pocket-like structure. ing. Therefore, since the insertion of the finger is restricted within a certain range, it is possible to avoid the trouble that the inside of the labia is injured with the finger during wearing.

<Interlabial pad packaging 30>
FIG. 28 is a plan view of the interlabial pad package 30 in which the interlabial pad 1 is sealed in an individual packaging container. The interlabial pad package 30 is a seal that joins the non-breathable sheets to a region where the non-breathable sheets formed by wrapping the interlabial pad 1 with a single non-breathable sheet are overlapped. 31 is provided. More specifically, the interlabial pad 1 is housed in a folded state at the folding line in the interlabial pad package 30, and the length in the longitudinal direction of the interlabial pad 1 in this state is 110 mm, which is short. The length in the direction is 35 mm and the thickness is 7 mm. The interlabial pad package 30 has a length in the longitudinal direction of 135 mm, a length in the lateral direction of 35 mm, and a thickness of 8 mm. The filling rate of air is 30%. According to such an interlabial pad packaging 30, even if an external pressure is applied during carrying, the region 2 straddling the crease line can be maintained in a gently curved state without being crushed. It is possible to provide the interlabial pad 1 where the wearer feels almost no use.

Claims (7)

A substantially vertically long interlabial pad having a body side facing the body side in wearing state and an anti-body side facing the opposite side of the body side, and having a longitudinal direction and a lateral direction ,
At the time of wearing, it is folded in two so that the opposite body sides face each other in the short direction, and at least a part of the portion along the fold line that is the folding axis of the fold is applied to the vestibule floor in the labia. It is sandwiched between the labia so as to touch,
The region straddling the crease line is provided with pressure dispersion means for repelling pressure generated on the interlabial pad in accordance with the wearer's movement and preventing the pressure from being directly conducted to the vestibular floor. all SANYO you are,
The interlabial pad is provided with a fiber assembly in a region straddling the crease line,
The interlabial pad , wherein the pressure dispersing means has fibers oriented to intersect the crease line in order to control the resilience to the pressure . The pressure dispersion means, the pad between claim 1 Symbol placement labia and has a slit that has been subjected in a region straddling the fold lines. The pressure dispersion means is interlabial pad according to claim 1 Symbol placement are those having an embossed pattern applied to the area straddling the fold lines. The both ends in the longitudinal direction are bent in the direction of the side of the body so as to reduce the pressure generated on the interlabial pad in accordance with the wearer's movement,
The interlabial pad according to any one of claims 1 to 3 , wherein a flexible line serving as the bending axis is provided on both side ends in the longitudinal direction. The interlabial pad according to any one of claims 1 to 4 , wherein the interlabial pad is an interlabial pad for urinary incontinence. The interlabial pad according to any one of claims 1 to 5 , wherein the interlabial pad is an interlabial pad for absorbing vaginal discharge. An interlabial pad package in which the interlabial pad according to any one of claims 1 to 6 is sealed in an individual packaging container.

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